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29 March 2024
 
  » arxiv » astro-ph/0311117

 Article overview


CDM in LSB Galaxies: Toward the Optimal Halo Profile
W.J.G. de Blok ;
Date 5 Nov 2003
Subject astro-ph
AffiliationCardiff University
AbstractLow Surface Brightness (LSB) galaxies are dominated by dark matter. High-resolution rotation curves suggest that their total mass-density distributions are dominated by constant density cores rather than the steep and cuspy distributions found in Cold Dark Matter (CDM) simulations. The data are best described by a model with a soft core with an inner power-law mass-density slope alpha = 0.2 +/- 0.2. However no single universal halo profile provides an adequate description of the data. The observed mass profiles appear to be inconsistent with LambdaCDM.
Source arXiv, astro-ph/0311117
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